Grinding-machine.



No. 650,035. Patented May 22, 1900.

A. R. CLIZBE.

GRINDING MACHINE.

(Application filed Aug. 12, 1899.' (No Model.) 4 Sheets-Sheet 1': NORRIS PDERS on. wow-urns" wnsumswn, 0.1:

Patented May 22, I900. A. R. CLIZBE.

GRINDING MACHINE.

(Application filed Aug. 12, 1899.)

4 Sheets-Sheet 2.

(No Model.)

'MMGLIQ Paiented May 22, 1900-.

' A. n- CLIZBE. GRINDING NIAEHINE. (Applicaition filed Aug. 12, 1899.)

4 Sheets-Sheet 3.

: nuns Pzrzns co. Mammal?" WASHINGTON u c Nrrn STATES PATET Crrlcia.

ADELIBERT R. CLIZBE, OF CHICAGO, ILLINOIS.

GRINDING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 656,035, dated May 22, 1900.

Application filed August 12, 1399. Serial No. 727,022. (No inbdelz) To (11 whom, it may concern.-

Beit known that I, ADELBERT R. CLI'ZBE, a resident of Chicago, in the county of Cook and State of Illinois, have invented certain Improvements in Grinding-Machines, of which the following is a full, clear, and exact description.

This invention has relation more particularly to that class of grinding-machines de signed for the grinding of harvester-knives. In grinding-machines of this character the grinding-wheel is carried upon a vibratory frame, the knife to be ground being sustained by a suitable knife holder or support.

One of the objects of this invention is to provide improved means whereby the arc of vibration of the grinding-wheel maybe readily varied. In this class of machines it is frequently desirable to hold in rigid position the frame that carries the grinding-wheel; and a further object of the invention is to provide improved means for this purpose.

A still further object of this invention is to provide an improved construction of knife holder or support; and the invention has also for its object to improve and simplify the machine in "arious particulars in order to enable the parts to be more readily manufac-' tured and assembled as they come from the foundry and in order to avoid as far as possible machine-work and labor upon the parts.

With these several objects in view theinvention consists in the novel features of construction hereinaftor described, illustrated in the accompanying drawings, and particularly pointed out in the claims at the end of the specification.

Figure 1 is a plan view of the grinding-machine embodying my invention. Fig. 2 is a View in side elevation. Fig. 3 is a view in side elevation of the vibratory knife-carrying frame, its support, and gearing, the main drive-wheel being omitted from the driveshaft. Fig. 4- is a detail view showing the lower part of the main standard or support. Fig. 5 is a View inhorizontal section through the knife-holder. Fig. 6 is a front view of the knife-holder. Fig. 7 is a detail view showing the manner of connecting the lower part of the knife-holder to its base. Fig. Sis a View in central vertical section on line 8 8 of Fig. 3.

wood or other suitable material.

In the accompanying drawings, A designates the base of the machine, that may be of To this base A is suitably bolted, as at a a, the base-plate b of the support or standard B. (See Fig. 8.) The upper part of the standard or supportB. which is preferably of cast metal, is formed with an overhanging arm 1), forming a journal-bearing b for the main drive-shaft C, this shaft being journaled also, as at in a bearing formed in the upper part of the standard 13.. The purpose'in forming the standard B with the overhanging arm carrying a journalbearing is to give as broad. a bearing as possible to the main drive-shaft. Upon the main drive-shaft C is mounted the-vibratory frame D, that carries at its forward end the grinding-wheelE. Preferablythe vibratory frame D is arranged upon the drive-shaft C in manner shown-Lhat is to say, one of the bearings d of the vibratory frame being arranged between the bearings 11 and b of the standard B, while the other bearing (1 of the vibratory frame is arranged outside of the bearing 1) of the standard B. The main drive-shaft C has revolution imparted thereto by a crank-handle C or by a drive-pulley or other suitable means, and upon the drive-shaft C is fixed the drive-pinion C ,that meshes with a gear-wheel F beneath it.

The drive-wheel F serves to impart a swinging movement to the vibratory 1 frame D through the medium of a pitmanrod 2, that is adjust-ably connected with the rearwardly-extending arm or part D of the frame D.

The manner of adjustably connecting the vibratory frame with its drive mechanism is preferably that next to be described and more.

rear end D of the vibratory frame passes a headed bolt 6, that extends through a segmental slot g, formed in the rear arm or portion of the adj Listing-lever G, and the threaded end of this bolt 6 is furnished with an adj usting wing-nut 7 and washer, whereby the Through the IOO lever G may be adjustably connected at dif'- ferent points to the rear end D of the vibratory frame. In order to permit the lever G to be shifted, it is conveniently formed with a handle g. It will thus be seen thatwhen it is desired to vary the arc of vibration of the wheel-carrying frame F it is only necessary for the operator to loosen the wing-nut 7 and shift the adjusting-lever G so as to lengthen or shorten the connection between the rear end D of the vibratory frame and the gearwheel F, whereby motion is imparted to said frame. Then by tightening the nut 7 the lever G will be held in the required: position.

The adjusting mechanism described afiords a,

very simple and efiective means whereby the arcf; vibration of the vibratory frame may therewith)" extends the stud f, thatrpasses through a longslot b -in thesupport or standard: B and through a hole or bearing in the shifting-lever H. This. lever H is held upon thestud f by'a cotter-pin f and is pivoted, as

at. h, (see- Figs. 3and 4,) to a projecting part.-

of the. standard B. The lever His formed withvaiseg mental slot h, through which passes a bolt; 8, that is attached, as at 9, to an-exten sign IO-of the standard B, and the threaded portion of, thebolt Sisfurnished with a win g;

nut 12', whereby the adj usting-lever may, be

held'either in raised or, lowered position,

Preferablythe. shifting lever. H is furnishedwitlia handle H, whereby it may be conveniently manipulated, When theparts arein normal position, (shown in Figs. 2 and Set the drawinge)" the lever H is in raised; position, the geanwheel Fbeing at such timein mesh withgthe. drive-pinion C Hence when the drivo-sha-ftis revolved a vibratory moti'o n will be imparted to the grinding-wheel frame throughthe mechanism hereinbefore described; If new it is desired to hold the grinding-i vheel frame in rigid position for the 'purposejoff grinding a straight-edgeiknife or folfitihfi purpose'of using; the grindingwheel fora considerabl'e, time at any one point of a knifie, tl1'ie operator will simply loosen thenut 8,so as to allow the shifting lever H toswing doiwngwa-rd) until the gear-wheel F is disengaged-from the drive pi'nion 0 This downwardi-movement of the gear-wheel Fywill' promptly throw out of action the mechanism by which the grindingwheel frameJisjvibrated: .A-st-he gear-wheel F thus passes from engagem-entwi th' the drive-pinionO its. teeth will engage withalug. or projection 19 that.

ispreferablycastin piecewith. thebzise-plate elevation:

' the legs at of the. section N. m and bearing-lugs a set within the open ended bearings 19 ofjthe. knife-holder base- It will be readily seen thatinthis v I way an exceedingly simple, cheap, and effect.- five means is provided for. pivotally support.-

plate P,

hot the standard or support B. (SeeFig. 1

This lug b will prevent the. turning of the gear-wheel F, and consequently will serve to hold the grinding-wheel frame at any desired The grinding-wheel E is preferably mounted upon a sleeve e, suitably keyed to a shaft the frame D. Upon the stud 75 is also. mounted a gear-pinion K that is preferably cast integral with the gear-wheel K, and: this pin.-

' ion K? meshes with an internallytoothed gear-wheel K that is keyed to onev end of the main drive-shaft .O. From the construction of parts as thus far defined it will be seen that when revolution is imparted to the main drive: shaft by the handle C or by other convenient means revolution will be given to thetgrinding-wheel E through the train of gearing'consisting of the pinion K, the gear-wheelfK,

the pinion K "and the gear-wheel'K3, andthe proportions of these several gear wheels and pinions are such that a very'rapid speed of revolution will be given to the, grinding-wheel. At the same timemovement willbe imparted from the drive-shaft G throughthe pinion C gear-wheel. F, pitman-rod 2, and, adjustingl'ever G to the, vibratory grinding-wheel frame D, if the parts he in positionshownin Fig. 2 ofthe drawings, and,the-grinding wheehwhile rapidly revolved, will'also be, swung by the vibratory frameD across the f ace of theknife to be ground. A

In order to hold-the harvester or other knife,

I prefer to provide the improved construction of knife-holder next, to, be described; This. knife-holder comprises two main parts or sections Maud N, that serve. tosnpport-theknife in such manner that it can be properly exposed to the action of the grinding wheel.

The section. M of the knife-holderis formed withle sm havin ivot-lu rs m extendin s a P a g laterally therefrom,'andover thesepivotrlugs Y fit bearing-lugs n, projecting laterally from The pivot-lugs ing the knife-holder. The secti'onslvl, andjN are, simple castings, and to assemble themit -is merely necessary-to set the pivot-lugs m! in: the pivot-bearings'n and then insertthese parts in the open bearings 19 of the basefpla-te P, tha't is fastened tothe base A ofv the machine. The upper portion of the knife-holder (section N is formed upon its inner edgewith clamping-lugs n and n adapted to engage the lower edge of the knife to be'gronnd. The knife-holder section M has upwardly-extending arms m upon the inner face of which are formed suitable bearing-lugs m that cooperate with the lugs n in clamping the knife to be ground. The upwardly-extending arms m of the knife-holder section'M are preferably formed with the laterally and downwardly extending parts m that are formed with the expanded bearing ends or fingers m these bearing ends m serving as bearing guides or supports for the teeth of the knife. Through the section N of the knife-holder extends the clamping-screw R, (see Figs. 1, 2, and 5,) that also passes through an extension M formed at the front of the knifeholder section N.

The threaded outer end of the bolt R passes through the end of the clamp S and carries a threaded nut 14. The clamp S is formed on its inner side with one or more inclined or cam surfaces 8, and the outer end of the extension M is similarly inclined or cam-faced, as at 3 Hence it will be seen that if a harvester-knife W be placed in the position indicated by dotted lines in Fig. 2 and the clamp S be turned by means of its handle S the sections M and N of the knife-holder will be drawn together because of the bearing of the cam-faces s and 3 thereby causing the knife to be firmly held between the lugs 71 m and the fingers m By manipulating the handle S the knife can be released from time to time to permit it to be advanced, so that its teeth shall be successively presented to the action of the grinding-wheel E. The handle S serves not only as a means for operating the clamp mechanism, but by this handle also the knifeholder can be rocked about its pivot-points in order to properly effect the grinding of the teeth. The base-plate P of the knife-holder is formed with slots 19 through which pass the bolts p and by these bolts the knifeholder can be set at the desired position with respect to the grinding-wheel. In order to limit the tilting action of the knife-holder, I provide an adjustable stop-block T, through the slot 25 of which passes an adjusting-bolt V, having turning wings at its upper end and having its lower threaded end within a threaded hole 1) .in extension 10 of the base-plate P, and a stud 13 that rises from the baseplate P and enters the slot 15, insures the rightline position of the block T. The forward end of the block T is inclined, as at i to engage one of the rearwardly-extending feet 91 of the knife-holder section N, and it is obvious that by moving the block T under this foot 02 more or less the extent of tilting movement of the knife can be easily controlled. The feet on on the knife-holder section M limit the tilting action of the knife-holder in forward direction.

Preferably a spring X (see Fig. 5) is interposed between the knife-holder. sections M and N, this spring serving to force the sections apart when the clamp-handle is turned to admit a knife to be ground or to relieve the pressure upon the knife, so that it may be advanced to bring its teeth successively opposite the grinding-wheel. j

It is manifest that the precise details of construction above set out may be varied without departing from the spirit of the in-- Vention, and I do not wish theinvention,therefore, to be understood as limited to such details.

Having thus described my invention, what- I claim as new, and desire to secure by Letters Patent, is-

1. In a grinding-machine of the character described, the combination with a suitable standard or support, of a grindingwheel frame pivoted thereto and having a part ex tending rearwardly beyond its pivotal point,

suitable means for vibrating said frame and adjustably-counecting mechanism between the rearward extension of said frame and the means whereby said frame is vibrated.

2. In a grinding-machine of the character described, the combination with a suitable standard or support and with a vibratory frame for the grinding-wheel and with suitable gearing for operating said wheel and said vibratory frame, of a connection between said frame and its operating mechanism and an adjusting-lever for varying the vibratory able gearing for driving said wheel and vibrating said frame, of a pitman-rod adjustably connected to the gearing whereby the vibratory frame is operated, a pivoted lever interposed between said pitman-rod and the vibratory frame and adjusting mechanismconnected to said lever.

5. In a grinding-machine of the character described, the combination with a suitable standard or support and with a Vibratory frame for the grinding-wheel, of a gear-wheel and pinion for operating said vibratory frame, a pitman-rod connected to said gear-wheel, an adjusting-lever pivotally connected to said vibratory frame and an adjusting screw bolt between said adj Listing-lever and the Vibratory frame whereby said lever may be set in different positions. Q

6. In a grinding-machine of the character described, the combination of a standard or support having a j ournal-bearing near its upper end and having a laterally-extended arm said gear-wheel- 7. In a grinding-machine of the character described, the combination with a suitable support or standard, of a vibratory frame for. the grinding-wheel pivoted to said'supportor standard and provided at its front with' arms and a shaft passing through said arms and carrying the grinding-wheel and provided at' the opposite side of its pivotal point with a rearward extension, a drive-shaft whereon; said vibratory frame is pivotally mounted, a drive-pinion on said drive-shaft, a gear-wheel connected to said pinion, a pitman-rod connected to said gear-Wheel and also connected with the rear end of the vibratory frame and a train of gearing leading from said driveshaft to the grinding-wheel shaft.

8.. In a grinding-machine of the character described, the combination with a suitable support or standard and with a vibratory frame for the grinding=wheel, of gear mech anism for operating said vibratory frame comprising a vertically movable gear wheel whereby said frame may be thrown into or out of action.

9. In a grinding-machine of the character described, the combination with a suitable support or standard, of a vibratory frame-for the grinding-wheel, gear mechanism for operating said vibratory frame comprising a movable gear-wheel and a shifting arm or leve'r whereby said gear-wheel may be moved to throw the gearing that operates'the vibratory frame into and out of action.

10. In a grinding-machine of the character.

described, the combination with a suitable support 'or standard and with avibratory frame for the grinding-wheel, of gear mechanism for imparting movement to said vibratory frame comprising a vertically-movable gear-wheel, a shifting lover or arm whereby said gear-wheel is supported and means for holding said shifting lever or arm in different positions.

11. In a grinding-machine of the character described, the combination with a suitable.

for the grinding-wheel mounted upon said drive-shaft, of a driving-pinion and gearwheel for operating said vibratoryframe, a shifting lever pivoted to said standard or support and carrying said gear-wh'eel'and means whereby said pivoted shifting lever may be clamped to the standard or support in order to hold said gear-wheel and driving-pinion in engagement.

13. In a grinding-machine of the character described, the combination with a suitable standard or support and with a vibratory frame for the grinding-wheel pivoted thereto, of gearing for imparting movement to said vibratory frame comprising a verticallymovable gear-wheel and means whereby said gearwheel may be thrown into and out of action and a stop at the base of the machine with which said gear-wheel will engage when it is thrown out of action.

14:. In a grinding-machine of the character described, a knife holder comprising clamping-sections formed withinterlocking pivotlugs and bearings anda base having bearingseats to receive said pivot-lugs'and bearings.

15. In a grinding-machine of the character described, a knife-holder comprising clamping-sections formed with interlocking pivot lugs and bearings having open-sided bearings adapted to admit said bearing lugs and seats and thus hold the sections of the knife-holder together while allowing .them to turn in forward and backward direction.

16. In a grinding-machine of the character described, a knife holder formed of two clamping-sections, one of said sections having bearing-lugs cast integral therewith and the other of said sections having bearing-seats cast integral therewith, and a bolt and clamp for drawing said knife holder sections together.

17. In a grinding-machine of the character described, a knife -holder comprising two clamping-sections formed respectively with interlocking pivot-lugs and bearing-seats and with forwardly and rearwardl y extending feet and suitable clamping mechanism for drawing said sections together.

18. In a grinding-machine of the character described, a knife-holder comprising separate sections between which the knife will be clamped, a bolt extending from one 'of said sections and provided with a cam-faced clamp and a forward extension upon said other-section provided with a cam-shaped end to engage said clamp.

l9. In a grinding-machine of the character described, a knife-holder provided with' one or more rearward feet or extensions and an adjustable stop-block adapted to be moved more or less under one of said feet or extensions in order to limit the tilting movement of the knife-holder.

ADELBERT R. CLIZEE. Witnesses:

JAMES H. PEIRCE, JULIA SMITH. 

